baber/WOPTO huggingface dataset:
Patent GB-597164-A (GB)
Title: Improvements in or relating to electric relays
IPC: H02H3/42
Filed: 1945-01-12
Abstract: 597,164. Electromagnetic relays. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Jan. 12, 1945, No. 1042. Convention date, Jan. 12, 1944. [Class 38(v)] The moving element of an A.C. relay is responsive to the sum of two torques, one torque being proportional to the product of two relaying currents times a function of the phase-angle between them and the other being responsive to the difference between the two currents. In Fig. 2 the moving element consists of two short-circuited loops L1, L2 mounted to rotate between four inwardly-projecting pole pieces and a central core member 6 under the influence of two fluxes which are perpendicular to each other. The vertical flux is produced by two coils C1 and C1D and the horizontal flux is produced by two coils C2 and C2D, the coils C1, C2 being respectively responsive to the two relaying currents I, and I2 though with predetermined phase-shifts between, and the coils C1D and C2D being responsive to the difference between the currents I, and I2. For example the relay may be used in the protective system shown in Fig. 1, Za, Zb, Zc, Zd, Zm, Zn being suitable phase-shifting impedances, and the currents through which C1D and C2D being derived from a current ID which is the difference between the two currents I1 and I2. In action, the vertical flux induces a current in short-circuited loop L1 which reacts with the horizontal flux to produce a torque and the horizontal flux induces a current in the loop L2 which reacts with the vertical flux to produce an additional torque. Fig. 5 shows a modification in which the exciting currents I, and I2 may be any two currents of the same frequency but of variable phase-relationship and in which the coil C1D and C2D are energised from a transformer 15 in a difference current branch 13, 14. Shading loops S on the leading and trailing pole tips serve to neutralise a centering - torque which is otherwise present and so make the relay more sensitive.
Patent GB-1064111-A (GB)
Title: Method of and apparatus for mixing materials
Inventor: BROOMFIELD KENNETH
IPC: B01F7/00
Filed: 1963-01-09
Abstract: 1,064,111. stirrers. IMPERIAL CHEMICAL INDUSTRIES Ltd. Feb. 5, 1964 [Jan. 9, 1963], No. 1065/63. Heading B1C. A stirrer comprises a wheel-like member 1 by which it is rotated by contact with the wall of a stationary container; as shown there are angled blades 5 (which may be tapered) extending between the member 1 and a disc 6. The wheel and disc may be fixed to the shaft and rotatable in a handle 4, or the stirrer may rotate on the shaft, see Fig. I (not shown); the apparatus may be handheld or power-driven and may be indirectly driven as by epicyclic gearing. The wheel-like member may be a disc, cylinder, sphere, spheroid or ellipsoid.
Patent GB-157199-A (GB)
Title: Improvements in airships
IPC: B64B1/00
Filed: 1921-01-08
Abstract: 157,199. Basenach, N. May 4, 1915, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings to Specification. Aerostats.-Non-rigid airships have multiple gas cells the walls of which are independent of one another and of the outer envelope which is maintained taut by the usual air blower. The gas cells may be of light, heavily rubbered fabric, and the envelope of strong, lightly rubbered material. The outer envelope may be kept inflated with nitrogen, ammonia &c., instead of air, supplied from bottles or produced during flight.
Patent GB-544463-A (GB)
Title: Improvements in screw threading taps
IPC: B23G1/22
Filed: 1941-01-27
Abstract: 544,463. Taps. FAIRWEATHER, H. G. C. (National Acme Co.). Jan. 27, 1941, No. 1072. [Class 83 (iii)] Taps, particularly those for threading oil well and similar large diameter pipes, have improved tripping means specially adapted for use with the collapsable tap described in Specification 448,922. The housing 1 carries a ring 41 that engages the end of the pipe to be threaded. The circular or other chasers 10 are carried by blocks radially slidable in the end of the body 2 under the control of an interchangeable cam core 4 provided with latching means and a retracting spring 54. A sleeve 11 is interposed between the housing and body and has attached to it a yoke 24 having a pivoted armature 25 for a lever 26 as in the prior Specification. A ring 53 is adjustable on the sleeve 11 is linked at 57 and carries a rib or flange 531 inclined on one side and square on the other. The rib engages with a slot in a locking plunger 44. Fig. 3, and the plunger is slowly retracted against spring pressure, to trip the chasers by a sliding cam member 47 having one bevelled end engaging a roller 45 on the plunger and the other bevelled end engaging a roller on a pivoted intermediate member 49 actuated by a fixed wedge 51 in the housing. To enable the time of tripping to be varied the member 49 has an arm 50 relatively adjustable by a screw 52. In modifications the timing is varied by adjusting the position of the wedge and the lever 49, 50 may be replaced by a single lever. In another modification this lever engages the wedge by a roller and the member 47 by mutually contacting cam ends. In another form the intermediate member is a toggle and in a final form the member has a lever 47a, Fig. 7, pivoted on the opposite side of the plunger to the wedge and carrying at its other end a roller directly engaging the wedge which is adjustable in position and is clamped by the arm 42.
Patent GB-780870-A (GB)
Title: Improvements in or relating to butterfly valves
IPC: F16K1/226
Filed: 1955-01-13
Abstract: 780,870. Valves. FIORENTINI, P. Jan. 13, 1955 [March 6, 1954], No. 1111/55. Class 135. A butterfly valve comprises a valve body having a bore formed with a part-spherical seating surface, a movable valve member having a complementary-shaped peripheral surface and at least one internally re-inforced sealing ring between the surfaces. A valve body 1, Fig. 1, fixed to a pipe coupling 40 is formed with a hard chrome part-spherical seating 41 engageable with sealing rings 9 having steel wire cores 25 and secured in grooves 11a in a valve member 11 by plates 15. The valve member is keyed to a shaft 12, Fig. 2, rotatable by a lever 5 slidable on the shaft. The shaft is mounted in taper-ended, roller-bearinged bushes 2 sealed against leakage by rings 8, 10 and wedged into tapered holes in the valve member. A locking pin 24 and pins engageable in holes in the lever boss and one of the bushes enables the valve to be locked in any desired position. The valve member varies in thickness from a maximum at its pivotal axis to a minimum at the places remotest therefrom so that the grooves 11 a are wider apart at the pivot axis to allow the sealing rings to pass below and above the shaft 12 and the bushes 2. In a modification, the valve member is made in two parts connected together along a plane obliquely disposed with respect to the shaft axis. A single re-inforced sealing ring is then fitted in a groove in this oblique plane. Instead of the locking-pin 24, the boss of the lever may be coned and wedged into a conical bush by a hand wheel screwed on to the shaft 12. The lever may be-replaced by a worm and wormwheel operable by a hand wheel.
Patent GB-124480-A (GB)
Title: Improvements in or relating to Bombs.
Filed: 1916-01-24
Abstract: 124,480. Vickers, Ltd., and North, T. K. Jan. 24, 1916. Projectiles; projectile fuses.-Relates to bombs adapted to be dropped from aircraft on to ships and submarines. According to this invention, a bomb is provided at its nose with displaceable member or pellet adapted to move downwards by inertia, and actuate impact firing-mechanism when the bomb strikes a hard body on or below the water surface, or to be driven upwards by water on striking the surface and thereby to ignite a time-fuse. The pellet a is secured to a tube b, which is capable of movement within an openended casing A<1>. The upper end of the tube b bears against segments f projecting through a fixed cylinder h and engaging with recesses in a spring- controlled striker i. Pointed catches l, passing through the member i, normally lock the tube b and are held in that position by a plug n at the end of a spindle p which bears wind-vanes q at its upper end. Vanes r are rigidly connected to the bomb-casing so as to deflect the air, as the bomb drops, against the vanes q. A casing c connected to the cylinder h contains the primer charge, and is provided at each end with detonators d, e respectively. The detonator e is adapted to be fired by a time-fuse comprising a fixed plate d' having a groove in it containing fuse composition. A number of percussion caps b<1> are mounted on a plate c<1> below the groove, and an adjustable striker a<1> which can be set so as to fire any one of the caps is provided on the pellet a, so that the timing may be controlled. When the bomb is dropping, rotation of the spindle p by the windvanes withdraws the plug h from contact with the catches l, so that if the bomb strikes an object on or below the surface of the water, the! inertia member ab can be moved forward, and, by passing clear of the segments f, can free the striker i ; the upper detonator d is thus fired, Impact of the bomb on water thrusts the member ab upwards, and the striker a' fires the time-tuse, so as to explode the bomb at a predetermined depth, according to the setting of the pin a<1>. The open end of a nose m<1> may be closed 'by a cap l<1> so that the time-fuse cannot act, the bomb being in this case adapted to explode by impact on water, mud, or any like substance.
Patent GB-728471-A (GB)
Title: Cement batching plant
Inventor: CLARK PETER
IPC: B28C7/04
Filed: 1953-01-14
Abstract: 728,471. Pneumatic conveyers; shoots and hoppers. EONIT ENGINEERING CO., Ltd. Jan. 8, 1954 [Jan. 14, 1953], No. 1130/53. Class 78 (1). Means for storing cement in bulk and delivering small quantities as required comprises an upper storage hopper 4, Fig. 1, a lower feed hopper 2, a screw elevator 3 for transferring cement from the lower to the upper hopper, a discharge shoot 23 having a permeable bottom through which air is passed to fluidize the cement and means for fluidizing the cement in the bottom of the hopper 2. The bottom 5, Fig. 2, of the hopper 2 slopes towards a sump 6 into which extends the lower end of the screw 3. The bottom is covered by a flexible diaphragm 7, e.g. canvas, stretched over wire mesh 8 and low pressure air is admitted to the space between the canvas and bottom by pipes 9 provided with sliding gate valves 35. A steeply inclined shoot 22 directs the cement discharged at the top of the elevator into the hopper 4. A shoot 23 at the bottom of this hopper discharges the cement through an outlet 27 on to a shoot 28 which has a control valve 47 at its inlet. The shoots 23, 28 have bottoms similar to that of the hopper 2. In a modification, the shoot 22 discharges into a receiver of definite capacity from which the cement passes to a delivery shoot in the upper part of the hopper 4. Any cement overflowing. from the receiver into the hopper is returned to the elevator by a shoot at the bottom of the hopper. Specification 722,562 is referred to.
Patent GB-676687-A (GB)
Title: Improvements in and relating to decorative streamers, garlands and the like
IPC: A41G1/04
Filed: 1949-01-14
Abstract: 676,687. Streamers, garlands &c. AMERY, Ltd., A., and WATSON, A. W. Jan. 16, 1950 [Jan. 14, 1949], No. 1134/49. Class 93. A decorative streamer, garland or the like comprises a strip of ruffled or pleated crepe paper maintained in this condition by a relatively narrow strip of material carrying an adhesive, applied to the run or strip of crepe paper. Referring to Fig. 1 a strip of ruffled or pleated crepe paper 4 has strips 5 fixed adhesively along the centre line at front and rear. The paper strip and the adhesive strips which are preferably of self-adhesive cellulose tape may both be coloured.
Patent GB-712975-A (GB)
Title: Improvements in coin and key controlled locks for caretaker cabinets
IPC: G07F17/12
Filed: 1950-01-17
Abstract: 712,975. Coil and key controlled locks for caretaker cabinets. BRECKNELL, MUNRO & ROGERS, Ltd., ALLEN, S., and SHEPHERD. R. W. Jan. 11, 1951 [Jan. 17, 1950], No. 1141/50. Class 27 Caretakers; coin discharging mechanism. To prevent premature discharge of a coin inserted in the caretaker cabinet of the parent Specification an obstruction limits the movement of the coin-balance lever while the cabinet door is open. In the lock illustrated descent of the coinbalance lever 48 to discharge the coin 61, Fig. 3, and free the bolt is prevented, while the door is open, by an upstanding arm 98 on a catch 97. The catch 97 is carried on one arm 94 of a bell crank the other arm 93, Fig. 5, of which engages the door 2 as it shuts so that the bell crank is turned about a pivot 38 against a spring 92, Fig. 3, to withdraw the catch from beneath the lever 48. The catch is of L-shape and is normally urged about a pivot 96 on the arm 94 to tht obstructing position shown by the weight of its lower limb 99, Fig. 5; it is, however, capable of deflecting about the pivot 96 should the door be opened after a coin has been inserted to depress the lever 48
Patent GB-1158184-A (GB)
Title: Improvements relating to the manufacture of printed circuits.
Inventor: JOHNSON LEONARD JOHN WARREN
IPC: H05K3/00
Filed: 1967-01-09
Abstract: 1,158,184. Printed circuits. BRITISH AIRCRAFT CORP. Ltd. 8 Jan., 1968 [9 Jan., 1967], No. 1181/67. Heading H1R. In the preparation of a printed circuit board, a thin even layer of photo resist material is applied simultaneously to both sides of the board by firstly immersing the board in a solution of resist, then withdrawing it from the solution and rotating the board about an axis perpendicular to the planar surfaces thereof at a speed sufficient to centrifuge any surplus resist material off the board and distribute the resist evenly over the upper and lower surfaces. The board may be held horizontally by a U-shaped bar having a central spindle which is gripped in a chuck of a bench mounted electric drill and a container of resist is placed on the drill stand. The raising and lowering of the board may be accomplished using the normal mechanism as when drilling.
Patent GB-123524-A (GB)
Title: Device for Reducing or Multiplying Speed.
Inventor: SCHULTZ EMILE JOSEPH AUGUSTIN
IPC: F16H13/08
Filed: 1919-01-17
Abstract: 123,524. Schultz, E. J. A. Feb. 22, 1918, [Convention date]. Propelling.-In a speed reducing or multiplying gear, a perforated cylindrical cage g, in which are balls e adapted to run in races in sleeves a., b, is connected to the shaft h carrying the propeller, and the driving shaft c, on which the sleeve a is fixed, may extend beyond the shaft h and carry an additional small propeller.
Patent GB-876314-A (GB)
Title: Improvements in or relating to vacuum pumps employing working liquids and liquid supply systems therefor
IPC: F04C19/00
Filed: 1959-01-13
Abstract: 876,314. Liquid-ring pumps. JENNINGS, I. C. Jan. 13, 1959 [Sept. 4, 1958], No. 1281/59. Class 110 (1). A liquid-ring suction pump A discharges to a pipe 25 by way of a separating tank B wherein entrained liquid is separated from the gas or liquid being pumped. Water is supplied to the tank B from a main 14 by way of a solenoid valve 16, a hand valve 17, a vacuum break C for preventing back flow into the main, and a U-shaped conduit 20, the water level in the tank being kept constant by means of an overflow 23. The liquid ring of the pump is replenished by water returned from the lowest point of the U-shaped conduit 20 through a pipe 62 and a metering orifice 66 to an annular space 56 which communicates through ports 58, 60 with the inlet ports 38, 40 of the pump. The flow of make-up water to the liquid ring, which is dependent on the difference between the constant head provided by the tank B and the variable pressure at the pump inlet, increases as the pump suction increases and therefore as the demand for make-up water increases.
Patent GB-685846-A (GB)
Title: Electron gun and amplifier employing the same
IPC: H01J21/14
Filed: 1950-01-18
Abstract: The high temperature treatment of surfaces of solid bodies is obtained by the intense beams of an electron gun (see Group XL (a)) which at its focal point heats to temperatures of several thousand degrees in a very short time (10-6 sec.).  A thin layer of the material may be melted to give an extremely fine crystalline structure on the surface; or a ground material may be coated with a material of higher melting point by galvanizing, evaporation, sputtering or spraying and this coating melted locally by the electron beam.  Alloying and chemical reaction are avoided. Aluminium and copper may be coated with iron and tungsten respectively by this method.  Alloying of materials one of which is reluctantly volatile may be achieved by the beam.
Patent GB-662542-A (GB)
Title: Improvements in and relating to the treatment of artificial staple fibres
IPC: D06M13/192
Filed: 1949-01-18
Abstract: Artificial staple fibres are treated to reduce their tendency to become electrified, by applying to them an aqueous composition in which is dissolved or dispersed an alkylolamine salt of a dibasic acid having the general formula HOOC-(CH2)n-COOH, in which n is an integer not less than 4.  The fibres may be made of cellulose acetate or other cellulose ester or ether or of nylon, or casein or other protein. A triethanolamine salt is preferred and the acid used to form the salt may be sebacic, suberic, pimelic, or adipic acid.  The aqueous composition may also contain an alkylolamine salt of a fatty acid such as capric, lauric, oleic, stearic, or other fatty acid, the molecule of which contains at least 10 carbon atoms. The composition may be applied by immersion, spraying, or treatment in a centrifuge. The fibres are preferably treated so that they retain 0.5-1.5 per cent of their weight of the alkylolamine-dibasic acid salt.  The composition may contain the salt in a concentration of 0.5-5 per cent by weight. Specifications 376,785, 388,426, 388,427, 430,221, 433,110, and 602,048, are referred to.
Patent GB-566320-A (GB)
Title: Improvements in or relating to testing machines
IPC: G01N3/00
Filed: 1942-08-15
Abstract: 566,320. Testing work-pieces. DEARSLEY, G., and MOLINS MACHINE CO., Ltd. Aug. 15, 1942, No. 1346/44. Divided out of 566,284. [Class 106 (ii)] A device for testing the tensile or compressive strength of a work-piece, comprises means for engaging or gripping said workpiece, means for moving the first said means to stretch or compress the work-piece, an electric contact device, operative when the first said means moves beyond a predetermined amount to cause an electromagnet to be energized, said magnet controlling or operating mechanism to determine the subsequent movements of the work-piece. The invention is applied to an automatic gauging machine for testing the links of a machine-gun belt, the whole machine being described in Specification 566,284. A plug gauge 177 passes through loops 1, 2 of the link L in its passage along a conveyer, to hold the link rigidly against lateral movement, while a plug gauge 77, mounted on a flexible rod, passes through the remaining loop 3 and through holes in plates 83, periodically spring-urged by a two-armed lever 84, 86, under cam control, so that if the link is not sufficiently rigid the lever 86 closes a switch 94 to energize a solenoid 98, Figs. 3 and 7, which depresses its plunger 106 to rock a hook-shaped member 110 into the path of the end 119 of a lever 118, the pivot of which is periodically reciprocated under cam control. When the end 119 is detained, the stroke of a rod 114 is doubled to eject the link from the pocket of the conveyer, when it is next stationary. The hook 110 is restored by the engagement of a screw 133 with an abutment 132 at the next movement of the lever 118, and an abutment 134 on a bracket 99 restores the lever 118 to its original frictionally-held position on a lever 122. Specificatiori 541,954, [Group XXX], also is referred to.
Patent GB-799892-A (GB)
Title: Improvements in or relating to electric motor controllers
IPC: H02P7/26
Filed: 1955-01-17
Abstract: 799,892. Automatic speed control systems. IGRANIC ELECTRIC CO., Ltd. Jan. 17, 1955 [Jan. 25, 1954], No. 1363/.55. Class 38 (4). To maintain constant the speed of a D.C. motor the armature of which is supplied through a thyratron 14 from an A.C. source L<SP>1</SP>, L2, the armature voltage is applied to the grid-cathode circuit of thyratron 14 in opposition to the direct voltage output of a potentiometer 16 the setting of which determines motor speed. A direct voltage developed across a resistor 40 by a rectifier 50 opposes the voltage from potentiometer 16 so that a reference voltage of either polarity may be set up by the adjustment of potentiometer 16. A phase-shifted alternating voltage from a potentiometer 42, connected to the centre tap of a supply transformer winding 24, is also included in the grid-cathode circuit of thyratron 14 to enable the effective amplification of the system to be varied. A resistance-inductance network 34 serves to improve the form factor of the armature current. Acceleration of the motor is controlled by the time constant of a resistance-capacity network 34, 72 through which the voltage from potentiometer 16 builds up after the motor has been started by the energization of a relay 18.
Patent GB-872681-A (GB)
Title: Dental light
IPC: F21S8/00
Filed: 1959-01-14
Abstract: 872,681. Electric lamps. RITTER CO. Inc. Jan. 14, 1959 [Feb. 5, 1958], No. 1405/59. Classes 75(2) and 75(4). An operating light comprises a housing having a reflector 27 mounted therein and a light source 23 mounted in the housing between the reflector and a lens assembly which comprises at least two-light transmitting members, lenses 37, 38 constituting a lens unit the peripheral margin of the members being resiliently mounted and sealed in spaced relation in a casing to provide a dead air space between the light transmitting members. The lenses are retained in grooves in a resilient sealing member 41 which is retained in a front recess 33 in a lens casing 12 and by rear clips 56 with tabs. A grid comprising louvres 46, tilted by oppositely disposed dimples 50, 51 engaging in slots 47 in the sealing member, directs the line of light. A bridge 61 interconnecting two lenses 38 has bosses to which a light shield 63 attaches. The casing 12 hinges at the bottom and latches at the top. The housing 11 pivots on horizontal and vertical pivots and has side handles. The surface of the lens 38 may have flutes and the lens 37 may not be of optical glass. Side clamps support the reflector which rests against resilient pads. Air circulates from an opening 96 around the lower hinge to slots in the top wall of the casing.
Patent GB-764139-A (GB)
Title: Improvements in or relating to heat-exchangers
IPC: F22D1/36
Filed: 1955-01-17
Abstract: 764,139. Heat exchangers. INDUSTRIECOMPANIE KLEINEWEFERS KONSTRUKTIONS UND HANDELSGES. Jan. 17, 1955 [Feb. 20, 1954], No. 1439/55. Class 64(3) A heat exchanger in which water is heated by flue gases comprises a group of water tubes 1 of substantially rectangular external cross-section each having transverse flutes 3 formed along two opposite sides thereof, the tubes being so grouped that cylindrical channels 2 are formed between opposed flutes of adjacent tubes, said channels extending through the tube group at right angles to: the tubes, and a whirling motion being imparted to the flue gases flowing through the channels 2 by guide members 4 disposed within said channels. In the form shown, the interior shape of the tubes is 'cylindrical and further channels for the flue gases are formed by the cylindrical portion of the tube and its vertical side walls. Opposed edges of the vertical side walls of adjacent tubes form passages 5 and are bevelled as shown to prevent dust particles from the flue gases entering the channels 6.